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Difference between oil-bearing, single ball bearing and double ball bearing of cooling fan

Difference between oil-bearing, single ball bearing and double ball bearing of cooling fan

  • Categories:News
  • Author:rain
  • Origin:capital
  • Time of issue:2021-03-12 10:37
  • Views:

(Summary description)Now there are different kinds of cooling fans in bearings. AC fans are generally oil-bearing, single ball, double ball and DC fans. On the basis of these three kinds of fans, there are hydraulic, magnetic levitation, fluid dynamics, nano ceramic and some hybrid bearings of two kinds. Here is a simple and intuitive introduction of oil, single ball, double ball in the life and performance of the difference. The following instructions can help users make a preliminary judgment according to their own needs and select the suitable bearing type.

Difference between oil-bearing, single ball bearing and double ball bearing of cooling fan

(Summary description)Now there are different kinds of cooling fans in bearings. AC fans are generally oil-bearing, single ball, double ball and DC fans. On the basis of these three kinds of fans, there are hydraulic, magnetic levitation, fluid dynamics, nano ceramic and some hybrid bearings of two kinds. Here is a simple and intuitive introduction of oil, single ball, double ball in the life and performance of the difference. The following instructions can help users make a preliminary judgment according to their own needs and select the suitable bearing type.

  • Categories:News
  • Author:rain
  • Origin:capital
  • Time of issue:2021-03-12 10:37
  • Views:
Information

Now there are different kinds of cooling fans in bearings. AC fans are generally oil-bearing, single ball, double ball and DC fans. On the basis of these three kinds of fans, there are hydraulic, magnetic levitation, fluid dynamics, nano ceramic and some hybrid bearings of two kinds. Here is a simple and intuitive introduction of oil, single ball, double ball in the life and performance of the difference. The following instructions can help users make a preliminary judgment according to their own needs and select the suitable bearing type.

1) Oil bearing

The accuracy is low;

Its service life is about 20000 hours, totaling 834 days and 2.3 years;

The relative motion line contact between bearing and shaft;

The running friction is large;

The vacuum impregnation method is adopted to store oil in the oil hole of the bearing inner diameter surface

Oil film lubrication is formed by friction heat generation;

It is better to use the fan in the vertical direction.

2) Single ball bearing

The second is accuracy;

Its service life is about 30000 hours, totaling 1250 days and 3.4 years;

Both line and point contacts were found;

The second is running friction;

The operation load mainly falls on the ball at the front end, while the copper at the back end provides the fulcrum function and adjusts according to the centrality of the ball after positioning;

It is better to use the fan vertically.

3) Double ball bearing

The precision is the highest;

Its service life is about 50000 hours, totaling 2084 days and 5.7 years;

The relative motion between bearing and shaft is point contact;

The friction force is small;

The inner ball of the bearing rotates with lubricating grease under the positioning of the retainer;

The fan can be fixed in any direction.

The above introduction is a brief introduction to the cooling fan bearing. It is unnecessary for most people to understand the detailed principle. The general users have enough of these points. Too much information will increase the problem of selection.

 

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